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------ - x² = 1 / * 3
3
2x+3-3x²=3
-3x²+2x+3=3
-3x²+2x=3-3
-3x²+2x=0
-3x²=-2x /:x
-3x=-2 /:(-3)
2
x =------ x=2/3 nie wiem jak się ułamki pisze :)
3